-finalizerinfo : Prints information on objects awaiting finalization.-heap : Prints a heap summary(GC algorithm ,heap configuration ,generation wise heap)-histo[:live] : Prints a histogram of the heap.-permstat :Prints class loader wise statistics of permanent generation of Java heap( the number and size of interned Strings are also printed)-F : Force(Use with jmap -dump or jmap -histo option when pid is not responding)-J[option]: Passes option to the Java virtual machine on which jmap is running.

Note :
-If the given process is running on a 64-bit VM, we need
to specify the -J-d64 option.
-In windows, the system path variable should contain jvm.dll(for my PC, it is in C:\Program Files\Java\jre6\bin\server).